Analysis of Information Propagation Characteristics in a Class of Three-layer Coupled Networks

In order to reveal the cross-platform communication characteristics of information in social networks, a three-layer coupled network communication model (TCNM) of "user layer-medium layer-platform layer" is constructed using the SIR communication mechanism and social behavior characteristics, and the three categories of node nearest neighbor, node path and node feature vector are used to determine the node importance and seven indicators to select the communication sources, and the correlation between inter-layer coupling mechanism and communication conditions, communication period and peak value is analyzed. Combined with the experiments, it is concluded that the stronger the inter-layer coupling, the shorter the information propagation period, the faster the peak and the higher the peak; when the inter-layer coupling is weak, the information propagation is fastest when the source is in the platform layer, and the period is smallest and the peak is highest when it is in the media layer. The choice of different source indicators has different effects on the information dissemination cycle and peak value.